fal-mcp-server: Hook for Claude Code

.claude/settings.json

PostToolUse is a hook for Claude Code from luminarylane/fal-mcp-server. Its token cost is not measured, scanned A, original, MIT.

Automated checks that run after the coding agent edits or creates files. Depending on the file type, they can run a formatter or linter and record the change in a log.

In plain words
What is it for?
Use them to run JavaScript, TypeScript, Python, or Ruby checks after edits and log file modifications or creations.
Why use it?
They help catch style problems after edits and provide a record of which files the agent changed.

Hook for Claude Code

Written for Claude Code: PostToolUse hook event. Also seen: reads .claude/ paths.

This is luminarylane/fal-mcp-server's own configuration. It tells Claude Code how to work on fal-mcp-server itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything fal-mcp-server configures →

Part of the fal-ai plugin — 3 hooks, 6 MCP servers shipped together

One of 4 entries in settings.json — they are configured in one file and arrive together.

Reuse

Borrowing it

Nothing to install: this file belongs to luminarylane/fal-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/luminarylane/fal-mcp-server/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/luminarylane/fal-mcp-server

Made for: Claude Code.

Or install fal-ai, the plugin that ships this one along with the rest of its 3 hooks, 6 MCP servers.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for PostToolUse

README.md
[![agentmods](https://agentmods.dev/badge/hooks/luminarylane/fal-mcp-server/post-tool-use.svg)](https://agentmods.dev/hooks/luminarylane/fal-mcp-server/post-tool-use)
Your own site
<a href="https://agentmods.dev/hooks/luminarylane/fal-mcp-server/post-tool-use"><img src="https://agentmods.dev/badge/hooks/luminarylane/fal-mcp-server/post-tool-use.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

PostToolUse scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the commands this hook runs, not an audit. A hook is shell that executes on your machine at the event it names, which is why every command in it is printed with what was found.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/settings.json · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "PostToolUse": [
    {
      "matcher": "Edit|MultiEdit",
      "hooks": [
        {
          "type": "command",
          "command": "if [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.js || \"$CLAUDE_TOOL_FILE_PATH\" == *.ts || \"$CLAUDE_TOOL_FILE_PATH\" == *.jsx || \"$CLAUDE_TOOL_FILE_PATH\" == *.tsx ]]; then npx eslint \"$CLAUDE_TOOL_FILE_PATH\" --fix 2>/dev/null || true; elif [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.py ]]; then pylint \"$CLAUDE_TOOL_FILE_PATH\" 2>/dev/null || true; elif [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.rb ]]; then rubocop \"$CLAUDE_TOOL_FILE_PATH\" --auto-correct 2>/dev/null || true; fi"
        }
      ]
    },
    {
      "matcher": "Edit|MultiEdit",
      "hooks": [
        {
          "type": "command",
          "command": "echo \"[$(date '+%Y-%m-%d %H:%M:%S')] File modified: $CLAUDE_TOOL_FILE_PATH\" >> ~/.claude/changes.log"
        }
      ]
    },
    {
      "matcher": "Write",
      "hooks": [
        {
          "type": "command",
          "command": "echo \"[$(date '+%Y-%m-%d %H:%M:%S')] File created: $CLAUDE_TOOL_FILE_PATH\" >> ~/.claude/changes.log"
        }
      ]
    },
    {
      "matcher": "Edit|MultiEdit",
      "hooks": [
        {
          "type": "command",
          "command": "if [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.js || \"$CLAUDE_TOOL_FILE_PATH\" == *.ts || \"$CLAUDE_TOOL_FILE_PATH\" == *.jsx || \"$CLAUDE_TOOL_FILE_PATH\" == *.tsx || \"$CLAUDE_TOOL_FILE_PATH\" == *.json || \"$CLAUDE_TOOL_FILE_PATH\" == *.css || \"$CLAUDE_TOOL_FILE_PATH\" == *.html ]]; then npx prettier --write \"$CLAUDE_TOOL_FILE_PATH\" 2>/dev/null || true; elif [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.py ]]; then black \"$CLAUDE_TOOL_FILE_PATH\" 2>/dev/null || true; elif [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.go ]]; then gofmt -w \"$CLAUDE_TOOL_FILE_PATH\" 2>/dev/null || true; elif [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.rs ]]; then rustfmt \"$CLAUDE_TOOL_FILE_PATH\" 2>/dev/null || true; elif [[ \"$CLAUDE_TOOL_FILE_PATH\" == *.php ]]; then php-cs-fixer fix \"$CLAUDE_TOOL_FIL

Read the full file on GitHub · 49 lines

Same file

What else settings.json configures

This page is one entry in a file that holds 4. Installing the file brings all of them; each is measured and scanned on its own page.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 49 lines scan A 0b1008bd3ad9

Subscribe to this mod's changes

PostToolUse is a hook published in the GitHub repository luminarylane/fal-mcp-server (52 stars, last pushed 4mo ago), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.